I am betting This is exactly why the masses are rated at 15k psi or greater. This doesn't suggest You can not make use of a lighter powder cost but it really does mean your gun, bore, and arms can get soiled.
Add to quotation Only present this user #six · Apr 14, 2024 (Edited) Which might be due to the fact as to demand weights, pressures, and velocities it appears on initially glance to perform in the ballpark of one thing similar to a 'Substantial Gun' kind powder, Inspite of Hodgdon's burn up rate chart positioning it appropriate next to Exclusive.
I comprehend nobody is probably intending to want to reply that in print and I would've requested Hodgdon instantly, but I work with enough attorneys to really know what their answer will likely be.
My measured velocities ended up near revealed data. For a lot of the cartridges I tested, W244 made some of the larger velocities Amongst the powders shown on Hodgdon’s Web-site, and it did this with relatively low cost weights.
SO it's been sitting down to the shelf taking up space. Just printed the data from Hodgdons web page for 1 ounce 12 Ga Gun Club hulls, I is going to be loading up 100 rounds, and give then a whirl to determine how the work out. Will actually be wonderful to have a use for that eight lbs of powder.
maybe even below the powder's bare minimum tension. A good illustration of this is the 148gr LHBWC in a 38 Specific loaded with three.0gr of Bullseye. This is certainly Probably the most exact revolver loads on the planet but can be an incredibly soiled burner. Bullseye is a very fast burning powder also features a minimum tension of 15K psi and because this load only produces about 10k psi, It can be like shooting Dust.
When pressures drop to 10k psi or a lot less, your entire length of the situation can get sooty when fired, which suggests a bad seal. As brass do the job hardens (approximately 4 periods fired) it will take even more strain to get a fantastic chamber seal. 15k psi chamber stress will however make brass increase to secure a excellent seal Irrespective of how over and over the brass has been fired. With all that said, when chamber pressures drops down below 15k psi, you won't get a superb powder melt away and you may not get a superb chamber seal …. both of those resulting in sooty scenarios and some thing below stellar performance.
The author established all of the primer flash holes were being substantially above sized, Therefore here expanding the force. I'm not indicating that was the cause in Farmer's illustration. Fairly there are numerous things which can influence tension Aside from the powder charge by itself. In Farmer's example, it may be a number of matters: as stated an about measurement flash gap, a unfastened primer pocket, a deep seated bullet (either at loading or from setback), or perhaps a variance in bullet bodyweight, or circumstance capability. Or a mix of multiple on the mentioned objects. Wolfe publishing produced an interesting e book titled Firearm Stress Variables that provide exciting reading on the topic. My copy is dated 1990 and was up-to-date in 2006 but has since been discontinued. It really is out there on Amazon but outrageously priced.
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Who is aware of. We’re usually told that primer ailment isn’t a very good indicator of psi but Until you've got a lab it’s what we acquired. I've a revolver that with even bare minimum loads, mashes the primer Pretty much to your lettering about the brass, so there’s that. Should your load works fantastic, is correct and Secure that’s everything matters.
Posted May perhaps thirty, 2022 On five/28/2022 at nine:35 AM, Youngeyes claimed: Are you saying there are scratches are on the beech face, and were being transferred to the primer? They appear to be gouges to me. Were being there another primers that appeared like that? Did you chrono the masses? I also identified an write-up about 244. Sure, in the event you appear intently at the situation about the still left within the 12 o'clock posture you may see the exact same scratches but they are much much less pronounced. Although I've a chronograph, I did not use it for this operate since I was in a public range and build can be a PITA. Thanks for putting up the Handloader website link. Pretty joyful that their 5.five grain submit corresponds nicely with my five.4 acquiring. Farmer's submit is interesting. I examine just yesterday about a fellow who was dealing with a problem which has a load he had made use of For a long time. He suddenly commenced getting a certain manufacturer (sorry I don't recall which) display symptoms of extreme strain so he despatched a few of the conditions to the journal writer for assessment.
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I have observed persons shoot the new "clear" manufacturing unit ammo at the selection and it is actually astonishing. Winchester SuperClean and Sellier Bellot Nontox.